Decimals and Fractions

Rules

100

When adding/subtracting fractions, do you need common denominators?

Yes

200

When adding decimals, what's the most important step when sloving?

Line up the decimals.

300

When subtracting decimals, is it important to write the larger number one top?

Yes

400

When adding/subtracting fractions, do we need to convert mixed numbers to improper fractions?

No, but it is an option.

500

When adding and subtracting decimals, what should one do after solving the problem?

Check your work!

Fractions 1

100

Add 1/2 + 3/4  as a mixed number or improper fraction

5/4 or  1 1/4

200

Add 1/2 + 1/4 

3/4

300

Subtract 7/10 - 1/5

1/2

400

Subtract 2 1/8 - 1 1/4  

7/8

500

Martin filled a measuring cup with 1/2 of a cup of vegetable oil. Then he poured 1/6 of a cup of the oil into a frying pan. How much oil is left in the measuring cup?

 4/12 cup oil

Decimals 1

100

Add the decimals: 1.46 + 1.21

2.67

200

Add the decimals: 1.5 + 2.03 + 0.6

4.13

300

Subtract 4.52 - 2.001

2.519

400

Add the decimals: 24.6 + 2.01 + 16.98 =

43.59

500

It rained 0.16 inches on Monday. On Tuesday, it rained 0.09 inches less than on Monday. How much did it rain on Tuesday?

0.7 inches

Fractions 2

100

Subtract the fractions 6/12 - 4/12 in simplest form

1/6

200

Subtract  5/6 - 5/8 

5/24

300

Add the fractions 2 3/5 + 3 1/2 in simplest form as a mixed number

6  1/10

400

Subtract the fractions 2 1/8 - 1/4 in simplest form as a mixed number

1 7/8

500

Of the flags in Spencer's Flag Shop, 3/10 are white and another 1/2 are orange. What fraction of the flags are either white or orange?

8/10 are white or orange

Comparing Fractions

100

Subtract 5.2 - 3.52

1.68

200

Add 198.306 +  2.21 + 51.71 + 5.8 =

258.026

300

Subtract 6.21 - 0.3 -1.67= 

4.24

400

Add 3.25 + 1.2

4.45

500

Last month,Barry finished 23 of his to-do list items, while Franco completed 110 of his to-do list items. Who finished a greater fraction of his to-do list last month?

Barry